Air intake for carburetors through hood louvers



April 19, 1932.

H. WALKER AIR INTAKE FOR CARBURETORS THROUGH HOOD LOUVERS Filed Sept. 6, 1928 A TTORNFY Patented Apr. 19, 1932 UNITED STATES ATENT OFFICE HIRAM WA R, or CLEVELAND, OHIO, ASSIGNOB, .3? menu ssio' nivinurs {11 3 71?? MOTOR CAB CORPORATION, OF CLEVELAND, OHIO, A CQBPQRATIQN OI YIEGINIA AIR INTAKE ron cennunnrons 'rnnouon noon ouvnns Application filed September 6, 1928 modern automobiles, it is desirable to take the air for the carburetor from a point which is reasonably cool and of substantially even temperature. Since the temperature inside id of the-hood varies to a greater extent than the temperature outside the hood, it is desirable to take the air for the carburetor from a point outside the hood.

According to the invention the louvers 5 which are present in the sides of the hood in most modern automobiles are utilized in a simple and eflicient manner forconveyi-ng air from outside the hood to the carburetor. The

construction is such that neither the appear -v ance of the automobile nor the ease of opening or closing the hood is aiiected in any way.

The invention also consists incertain new and original features of construction and combinations of parts hereinafter set forth and claimed.

Although the novel features which are believed to be characteristic of this invention will be particularly pointed out in the claims appended hereto the/invention itself, as to its objects and advantages, the mode of its operation and the manner of its organization may be better understood by referring to the following description taken in connection with the accompanying drawings forming a part thereof, in which Fig. 1 is an elevation of the front part of a type of modern automobile with parts bro.- ken away for clearness; and

Fig. 2 is a section on the line 2+2 of Fig. 1.

In the following description and in the claims parts will be identified by specific names for convenience, but they are intended to be as generic in their application to similar parts as the art will permit.

Like reference characters denote likezparts in the several figures of the drawings;

In the drawings accompanying and forming part of this specification, a practical com.- mercial embodiment of the invention is shown, but as such illustration is primarily Serial No. 304,182.

for purposes of disclosure, it will be under stood that th s uctu e may be m d fied i various respects withoutdeparture from the broad Sp r a ope of the in e t on as hereinafter defined and claimed.

Referring now to thedmwings, the automobile shown for purposes of illustration is mod r ype a ing a radiato 10 fr nt lowed by a hoo de te-d ge era y by he h od 11 isfoll wcd y the u ua owl nd, body ot shown).- The hood compr ses a top secti nlQ d de ection 1 inged thereto by hinges 14:, Thehood i provided. with sets f or ntally extending, down a dly opening louvers 15 for coo i g, as is ell u erstood The automobile is provided with a ill 115 extending from the radiator 10 t the cowl, towhichthesideslii ofthe hood are fastened, as i well understood. Each side section f the hood 11- is provided with a handle 16.- to aid in raising and lowering the hood. Dis+ posed in the hood, as is well understood, is an internal combustioneng'i-ne 17 of any 'desired construction, having a suitable carburotor 18 secured thereto. The carburetor 1s provided with an air inlet pipe '19 ending ina cylindrical portion Qtland provided with an annular flange 21 spaced from the end, the

end of this pipe opening toward the side of L the hood. The inner face of one side 13 of the hood is provided with agenerally rlectangularair box '22 having an opening 23 adapted to register with the pipe 19. This box. is large enough topcover a sufiicient number of louvers 1:5. to allow the required amount of air to pass into the carburetor. A washer 123 of nonesqueaking material-is secured to the air box around the opening 23.

In order to maintain a substanti'all y airltight connection betwen' the air box 22- and the inlet pipe 1 9 irrespective .of the weaving or other motion of the vehicle a sleeve '24, having an outer flange 25, is slid over the-cylindrical portion and a helical spring26 is placed between the flanges 21 and to yieldably hold the outer flange 25 against the washer 123' when the hood is closed. The sleeve 24 is provided with .a slot and the cylindrical portion with a pin 28 disposed in" whenever the hood is closed irrespectiveofincreases the volumetric efficlency of the said slot to limit the outward movement of said sleeve when the hood is raised.

Thus it will be seen that the hood section 13 may be raised and lowered without any extra attention to the connection between the air box and air intake pipe. The air boX is separated from the air intake pipe by merely raising the hood and these parts are properly connected together by merely lowering the hood in the ordinary way. The yielding construction insures an .air tight connection vibration and weaving of the car; Furthermore, the downwardly opening louvers pro- (tiecttm carburetor air intake from rain and irt.

It will be seen that the arrangement does notin any way detract from the appearance ofthe automobile since it is entirely hidden from view; The arrangement furthermore motor and keeps it cooler. In addition, it causes better and more uniform carburetion, since the temperature variation of the a r outside is less than under the hood. Furthermore, in hot weather the air outside is much cool-er than under the hood and hence'the performance of the engine'is improved and high volumetric; efliciency maintained.

WVhile certain'novel features of the invention have been shownand described and are pointed out in the annexed claims, it will be understood thatvarious omissions, substitutions and changes in'the forms and details of the device illustrated and in its operationmay be made by those skilled in the art without departing from the spirit of the invention. 7

What is claimed is 1. A vehicle having in combination, a carburetor intake conduit, a hood enclosing said conduit and having a movable part formed with louvers therein for the passage of air, means carried by said hood for directing air flowing through'said louvers into the in movable part'of the hood permitting unrestricted movement of the latter.

3.:A vehicle having in combination, a carburetor intake member, a hood enclosing the carburetor intake member, and having a movable part formed with an opening therein for the passage of air, a second member disposed beneath the hood .in a position to collect the air flowing through said opening, said second member having an outlet opening therein communicating with the conduit aforesaid, and means forming a separable joint between one of said members and movable part permitting unrestricted movement of the latter. Y I

4. A vehicle having in combination, a carburetor, a hood enclosing said carburetor. and havinga movable part formed withan opening in one wall thereof for the passage of air, means for receiving the air flowing through said opening and supplying the same to the carburetor, means forming a separable joint between the means aforesaid and movable part permitting unrestricted movement of the latter, and means forming a tight seal for said joint.

5. A vehicle 1 comprising a movable part having an opening therein for the passage of air, a member disposed beneath the hood and secured to the movable part for receiving the air flowing through said opening and having an opening in one wall thereof, a carburetor intake conduit having the inlet end thereof extending in juxtaposition to the member in the normal position of the part aforesaid and adapted to register with the opening in said member for receiving the air flowing into the latter, said member and conduit free from connection with each other permitting unrestricted movement of the movable part aforesaid, and means carried by one of said members and surrounding the inlet end of saidconduit for forming a tight seal.

6. A vehicle having in. combination, .an air intake conduit, a hood enclosing said conduit and having a movable part formed with an opening therein for the passage of air, means for conducting the airflowing through said opening into the intake conduit including a member forming a chamber having an opening therein normally arranged in registration with the inletend of said intake con duit, said member free from connection with the end of said conduit'permitting free move-' ment of the part aforesaid, means surrounding the opening in said member and the inlet end of said conduit forming a detachable seal, said means including a spring influenced element carried by one of said members and engageable with the other of said members.

7 A vehicle having in combination, an air intake conduit, a hood'enclosing said conduit and having a movable part formed with a louver therein for the passage of air, means for collecting the air flowing through said louver and conducting the same into the intake conduit including a chamber fixed'to the having in combination, a hood' movable part of the hood in communication with said louver opening and having an outlet opening thereinregistering with the inlet end of saidintake conduit, said chamber and intake'conduit being free from connection permitting free movement of said movable part, a seal for the joint between the inlet end of the intake conduit and said chamber, said seal including a tubular member sleeved upon the end of said conduit and engageable with a portion of said chamber around the outlet opening therein, and yieldable means normally urging said tubular member into firm engagement with the portion aforesaid of said chamber.

8. A vehicle having in combination, a hood having a movable part formed with an opening therein, a carburetor intake conduit arranged beneath the hood with the inlet end thereof in juxtaposition to the opening in the hood for receiving air passing through the latter, and sealing means between the inlet end of the conduit and opening separable upon movement of the movable part of the hood.

In testimony whereof I have hereunto set my hand.

HIRAM WALKER. 

